RU1804944C - Method for manufacturing cup-type articles - Google Patents

Abstract

Usage: technology of plastic deformation of metals. SUMMARY OF THE INVENTION: a preform is obtained by cutting a bar from a bar, it is prepared for extrusion, a glass is formed, and interoperational annealing and phosphating are carried out. Extrusion of a workpiece for extrusion is carried out in four transitions by dialing a cone-shaped head, distributing the workpiece in the zone of the head when marking the hole and double reduction, carried out on a multi-position cold heading machine. 1 ill.

Description

Joint venture

WITH

The invention relates to mechanical engineering, in particular to the technology of plastic deformation of metals by dies on forging and stamping equipment. .

The aim of the invention is to increase the efficiency of the process by reducing the number of technological and auxiliary equipment and reducing the production area when receiving, mainly valve pushrod bodies.

This is achieved by the fact that in the method of manufacturing products such as glasses, including the operation of cutting blanks from a bar on an automatic machine with subsequent extrusion of the glass, drawing with thinning the wall, disembarking and molding the bottom on the presses, and interoperative annealing and phosphating, preparing the workpiece for extrusion is carried out in four transitions by dialing a cone-shaped head, dispensing a workpiece in the head area when marking the hole and double reduction carried out on a multi-position cold heading machine. The resulting semi-finished product on a cold heading machine has a sufficient hole depth, which will facilitate the subsequent operation of the final extrusion of the glass. The stamping transitions on a multi-position machine are characterized by a lower relative deformation of the metal than reverse extrusion, which makes it possible to intensify the process and provide a semi-finished product for final extrusion on a multi-position machine (without intermediate annealing).

The drawing shows the transitions of the manufacture of semi-finished products to multi-position

about

4 About

N

N

cold heading machine and their parameters are given.

$ is the relative deformation;

L is the logarithmic deformation;

i / fci is the total relative deformation at this transition;

Pi is a technological effort.

Example. A method for manufacturing cup type products is as follows. 1 / 1z conditions for the equality of volumes and the proposed configuration of transitions determined the size of the semi-finished products at each transition. From the known dependences 1, 2, the relative 1 / L / 1E logarithmic strains and the total ones, ipc and EC strains after each transition, were determined. Calculations show the possibility of high-quality deformation of the metal at each transition.

Calculations show the possibility of high-quality deformation of the metal at each transition and the implementation of the process without intermediate annealing, since the heart rate is 0.6-0.7 allowed for steel 35 for the operation of upsetting and reduction. Also calculated according to well-known techniques, stamping forces on transitions. The cutting force was kN, the landing force was kN, the distribution force was kN, the reduction force was kN, kN. Thus the total technological effort

0

5

0

5

0

kN The stamping of the semi-finished product for extrusion is supposed to be carried out on a cold-upset machine AB 1923 with a force of 3200 kN.

The application of the method of manufacturing valve pushrod housings makes it possible to reduce the number of main and auxiliary equipment and production space by 20%.

Claims (1)

SUMMARY OF THE INVENTION A method for manufacturing cup-type products, including the steps of cutting a workpiece from a bar on an automatic machine, preparing a workpiece for extrusion, followed by extruding the cup, drawing to thin the wall, disembarking and forming the bottom on the presses, and interoperative annealing and phosphating, characterized in that the purpose of increasing the efficiency of the process by reducing the number of technological and auxiliary equipment and reducing production areas in the production of predominantly pusher buildings l of the valve, preparation of the workpiece for extrusion is carried out in four transitions by dialing a cone-shaped head, dispensing the workpiece in the head area when marking the hole and double reduction carried out on a multi-position cold heading machine.